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I would be careful with generalizations about front engined cars though. My 7 definately does not understeer defacto, for autocross I set it up to slightly oversteer and do set it up to slightly understeer for track events. The weight distribution is 46% front 54% rear, this car is very, very easy to balance and set up to understeer or oversteer depending on the event. Remember also the Panoz LMP cars are considered mid-engine even though the engine is in the front. As someone mentioned earlier, it's not just weight distribution it is also polar moment of enertia and even radius of gyration. Don't forget the old college test question from dynamics, if you have two metal balls the same diameter, same weight, but one is solid and one is hollow and you roll them down and incline, which gets to the bottom faster? Or ask another way which one accelarates quicker? If you understand the answer you understand that while weight distribution is important, how that weight is distributed around the center of gravity is important also, polar moment of enertia.
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